Toulouse will go into their opening clash of the 2011-12 Heineken Cup campaign without scrum-half Jean-Marc Doussain.

The French international - who made his debut for Les Bleus in the World Cup final loss to the All Blacks - will sit out the clash with a twisted ankle. He faces a minimum of 10 days on the sidelines and is also a doubt for their second match of the tournament against Irish newcomers Connacht.

The half-back sustained his injury in Toulouse's narrow 21-17 win over Perpignan. 'Baby Byron' - a nickname handed to him in tribute to his predecessor Byron Kelleher - is likely to be replaced in the starting line-up by Nicolas Vergallo with former Australian international Luke Burgess due to arrive in Toulouse imminently.